화학공학소재연구정보센터
Energy Conversion and Management, Vol.38, S397-S402, 1997
Catalytic conversion of carbon dioxide into hydrocarbons over zinc promoted iron catalysts
The hydrogenation of carbon dioxide to hydrocarbons over iron catalysts was studied in a fixed bed reactor under pressure of 10 atm and temperature of 573 K. Iron catalysts promoted with V, Cr, Mn and Zn prepared by precipitation method were adopted in the present study. The catalysts were characterized by XRD, carbon dioxide chemisorption and (57)Mossbauer spectroscopy. The hydrocarbons were formed directly from carbon dioxide over iron catalysts. The iron promoted with Cr and Mn improved conversion of carbon dioxide and increased the selectivity of C-2 - C-4 alkenes. Whereas, the Zn promoted iron catalyst showed unusually very high selectivity for C-2 - C-4 alkenes. With varying Fe:Zn ratio, the smaller ratio of Zn increased the alkene selectivity.